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Summary: Ctors | Methods | Inherited Methods

# FloatArrayEvaluator

`public class FloatArrayEvaluator`
`extends Object` `implements TypeEvaluator<float[]>`

java.lang.Object
↳ | android.animation.FloatArrayEvaluator

This evaluator can be used to perform type interpolation between `float[]` values. Each index into the array is treated as a separate value to interpolate. For example, evaluating `{100, 200}` and `{300, 400}` will interpolate the value at the first index between 100 and 300 and the value at the second index value between 200 and 400.

## Summary

### Public constructors
`FloatArrayEvaluator()` Create a FloatArrayEvaluator that does not reuse the animated value.
`FloatArrayEvaluator(float[] reuseArray)` Create a FloatArrayEvaluator that reuses `reuseArray` for every evaluate() call.

### Public methods
`float[]` | `evaluate(float fraction, float[] startValue, float[] endValue)` Interpolates the value at each index by the fraction.

### Inherited methods
From class `java.lang.Object`
`Object` | `clone()` Creates and returns a copy of this object.
`boolean` | `equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void` | `finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>` | `getClass()` Returns the runtime class of this `Object`.
`int` | `hashCode()` Returns a hash code value for the object.
`final void` | `notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void` | `notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String` | `toString()` Returns a string representation of the object.
`final void` | `wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void` | `wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void` | `wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.
From interface `android.animation.TypeEvaluator`
`abstract float[]` | `evaluate(float fraction, float[] startValue, float[] endValue)` This function returns the result of linearly interpolating the start and end values, with `fraction` representing the proportion between the start and end values.

## Public constructors

### FloatArrayEvaluator

    public FloatArrayEvaluator ()

Create a FloatArrayEvaluator that does not reuse the animated value. Care must be taken when using this option because on every evaluation a new `float[]` will be allocated.

See also:

- `FloatArrayEvaluator(float[])`

### FloatArrayEvaluator

    public FloatArrayEvaluator (float[] reuseArray)

Create a FloatArrayEvaluator that reuses `reuseArray` for every evaluate() call. Caution must be taken to ensure that the value returned from `ValueAnimator.getAnimatedValue()` is not cached, modified, or used across threads. The value will be modified on each `evaluate()` call.

Parameters
`reuseArray` | `float`: The array to modify and return from `evaluate`.

## Public methods

### evaluate

    public float[] evaluate (float fraction,
                    float[] startValue,
                    float[] endValue)

Interpolates the value at each index by the fraction. If `FloatArrayEvaluator(float[])` was used to construct this object, `reuseArray` will be returned, otherwise a new `float[]` will be returned.

Parameters
`fraction` | `float`: The fraction from the starting to the ending values
`startValue` | `float`: The start value.
`endValue` | `float`: The end value.

Returns
`float[]` | A `float[]` where each element is an interpolation between the same index in startValue and endValue.

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